4 Masks of Inca (Foxium) Slot Review

4 Masks of Inca: Slot Overview 

Foxium invites players into the heart of ancient South America with 4 Masks of Inca, a richly themed online slot released on June 21, 2023. Although the title might initially evoke similarities to other mask-based slots—particularly 9 Masks of Fire—the two could not be more different. 4 Masks of Inca is a standalone creation, built from the ground up with Foxium’s signature attention to detail and a structure focused on bonus triggers, mask-based battles, multiplier wilds, and big win potential. 

Played on a 5×3 layout with 20 paylines, the game is driven by a medium-volatility math model, a 96.22% RTP, and a hit frequency of 18.47%. Despite the hit rate being on the lower side compared to many modern releases, the slot compensates with a robust and dynamic feature set that keeps every session unpredictable. The maximum win potential is enormous—clocking in at 20,000x the stake—putting it in line with some of the most ambitious titles in the Games Global portfolio. Players may stake anywhere from €0.20 to €18 per spin, with an optional Boost mode that increases the stake by 50% for enhanced feature frequency. 

With well-crafted visuals, compelling mechanics, and an atmospheric presentation rooted in Incan culture and mythology, 4 Masks of Inca delivers a polished, cohesive experience that stands out in a crowded genre.

Design and Graphics 

Foxium has established itself as a visual powerhouse, and 4 Masks of Inca is no exception. The moment the game loads, players are greeted with an opening cinematic featuring a regal Incan ruler, seated upon a majestic throne and framed by firelit stonework. This introduction sets the tone for a game that balances mystical flair with archaeological authenticity.

The reels are viewed from above, offering a bird’s-eye perspective of a stone temple floor decorated with ornate carvings, dark green mineral textures, and intricate Incan patterns. High-quality animations bring the grid to life—wild pumas roar, masks ignite with magical energy, and tokens burst into the collection meters. 

Symbol design is elegant and thematically cohesive. The lower-value symbols consist of stylized stone-block card royals (9–A), while the high pays are elaborately carved mask representations—gold, jade, red stone, and sapphire structures glowing with animated detail. These masks are unmissable and form the visual spine of the game’s feature set. 

The wild symbol is a puma mask, rendered with glowing green eyes and fierce expression, perfectly reflecting its in-game importance. The UI is modern and clean, using orange and turquoise accents to match the architectural palette. Overall, Foxium achieves a refined Incan aesthetic without resorting to loud colors or visual clutter.

Gameplay Mechanics 

4 Masks of Inca uses a classic 5-reel, 3-row, 20-payline format, rewarding wins from left to right. Though the base game is simple in structure, Foxium builds substantial depth through multipliers, tokens, and bonus triggers. 

Symbol Payouts 

Low pays (9–A): award 1.25x–3.75x for five-of-a-kind 

High pays (4 masks): award 7.5x–10x for five-of-a-kind 

Wilds: substitute for all regular symbols 

Wilds are especially important because they come with multipliers up to x5, and when more than one wild lands in a winning line, their multipliers combine. For example, a line using a 3x wild and 4x wild yields a 12x multiplier, giving the base game surprising explosive potential. 

Boost Mode 

Players can increase their stake by 50% to activate Boost. With Boost on, the odds of triggering Free Spins, Inca Battles, and Wild Puma Awards increase. 

Hit Rate 

At 18.47%, wins are less frequent, but the game’s pooled mechanics—especially the meters—ensure that tension and progression remain present throughout.

Sound and Music 

The audio design plays a major role in building atmosphere. Foxium opts for a moody, tribal-ambient soundtrack driven by deep drums, wooden percussion, and resonant flutes. Instead of trying to overwhelm players with bombastic cues, the soundtrack remains restrained, adding gravitas without distracting from gameplay. 

Sound effects are crisp: masks clatter like carved stone, wilds land with a satisfying growl, and tokens click into their meters with ceremonial resonance. During bonus rounds, the audio intensifies, heightening suspense as multipliers stack and meters fill. It’s a subtle yet immersive soundscape that deepens the archaeological adventure.

Bonus Features 

4 Masks of Inca includes multiple features that interact with each other to create unpredictable moments of high excitement.

Inca Battle 

The base game includes four token colors—red, purple, blue, and green—each tied to a specific high-pay mask. When a token symbol lands, it fills the meter for that color. Once 3 tokens of the same color are collected, the Inca Battle begins. 

During the battle: 

Players receive 5 spins. 

Each mask on the reels is assigned a prize value from 10x to 10,000x the bet. 

Whichever mask lands the most during the 5 spins awards its corresponding prize. 

This mode introduces a dramatic “race” dynamic, where player hopes shift from spin to spin as one mask pulls ahead of the others. The potential for a 10,000x mask makes every battle feel exhilarating.

Wild Puma Collect 

Every wild landing in the base game fills the Wild Puma Collect meter. At random, the Wild Puma Award can trigger, granting 10x to 50x the bet instantly. While not as explosive as the Inca Battle or Free Spins, this feature creates intermittent boosts that keep the session lively.

Free Spins 

Landing 3 scatter symbols on reels 1, 3, and 5 awards 3 free spins. Though only three spins sounds restrictive, the feature has powerful mechanics: 

Free Spins Rules: 

Each time a wild lands, it sticks to the reel with a 1x multiplier. 

Wilds remain sticky for the rest of the feature. 

Landing any wild resets the spin counter to 3. 

On each additional spin, a random wild’s multiplier increases by +1. 

Multiple wilds multiply together when in winning combinations. 

The free spins mode often produces chaotic, high-impact outcomes—especially when several sticky wilds accumulate across the grid.

Buy Free Spins 

Once players trigger free spins naturally once, they unlock the ability to purchase the feature for 60x the bet. This option enables strategic play for those chasing the best multipliers.

Betting Options and Payouts 

The game can be played from €0.20 to €18, accommodating a range of players. With an RTP of 96.22%, it sits above market average and carries medium volatility, meaning win patterns are relatively balanced. However, bonus rounds—especially Free Spins and Inca Battles—can deliver dramatic momentum swings. 

The standout statistic is the 20,000x max win, one of the highest among Foxium titles. With stacked multipliers, sticky wilds, and high-value masks, the game is theoretically capable of colossal payouts, though hitting these requires volatility tolerance and patience.

Conclusion 

4 Masks of Inca is a visually polished, feature-rich slot that demonstrates Foxium’s finesse in both design and game structure. The Inca Battle adds a strategic mini-game element rarely seen in online slots, while sticky wild free spins produce some of the game’s most adrenaline-fueled moments. The occasional random Wild Puma Award and the option to Boost spins create a satisfying sense of progression even outside the main bonuses. 

While the base hit frequency is low and volatility may feel unpredictable at times, the game compensates with layered mechanics and massive top-end potential. The slot doesn’t reinvent the Incan theme but elevates it through polished visuals, moody sound, and inventive bonus ideas. 

For players who enjoy bonus variety, escalating multipliers, and a game capable of massive wins, 4 Masks of Inca is a compelling adventure worth taking.